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    Wyświetlanie 1-4 z 4
    Tytuł:
    EVALUATION OF NUTRITIONAL AND MEDICINAL PROPERTIES OF BACOPA MONNIERI BIOMASS AND PREPARATIONS
    Autorzy:
    Muszyńska, Bożena
    krakowska, Agata
    Lazur, Jan
    Szewczyk, Agnieszka
    Opoka, Włodzimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/895242.pdf
    Data publikacji:
    2018-12-31
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    dietary supplements
    phenolic compounds
    Bacopa monnieri
    artificial digestive juices
    bioelements
    Opis:
    Bacopa monnieri (Scrophulariaceae) is a well-known plant and has been used by humans for several thousand years. In traditional Hindu medicine, it is one of the most important medicinal plants. The aim of the work was to determine the content of Fe, Mg, and Zn and selected organic compounds before and after extraction into the artificial digestive juices obtained from preparations containing B. monnieri. Commercial preparations in the form of tablets and capsules and B. monnieri shoot cultures were used in the experiment. The metal content in the considered mineralized samples was analyzed by atomic absorption spectrometry and organic compounds by RP-HPLC method. The maximum measured content of the metals released into the digestive juices was as follows: Fe – 32.85; Mg – 367.51; and Zn – 16.41 mg/100 g of the preparation. The existing research shows that metals are best released into the artificial digestive juices from the B. monnieri shoot cultures, and least efficiently from the commercial preparations available in the form of tablets. The phenolic compounds analyzed in the methanol extracts and the extracts of the artificial digestive juices were as follows: protocatechuic acid, p-hydroxybenzoic acid, neochlorogenic acid, chlorogenic acid, isochlorogenic acid, caffeic acid, ferulic acid, cynaroside, trifolin, and luteolin. Bacoside A was only determined in the extracts from the B. monnieri shoot cultures. The experimental results revealed that B. monnieri distributed in the form of tablets did not break down in the artificial digestive juices during the considered time intervals.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 6; 1353-1361
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Waste as substrates for agricultural biogas plants : A case study from Poland
    Autorzy:
    Czekała, Wojciech
    Pulka, Jakub
    Jasiński, Tomasz
    Szewczyk, Piotr
    Bojarski, Wiktor
    Jasiński, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/2203541.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    biofuels
    biogas plant
    circular economy
    renewable energy
    waste management
    waste to energy
    Opis:
    Energy production from renewable sources is one of the main ways to fight against global warming. Anaerobic digestion process can be used to produce biogas containing methane. In the light of the growing demand for substrates, a variety of raw materials are required. These substrates should be suitable for anaerobic digestion, and processing them need to provide the desired amount of energy. This paper aims to discuss the agricultural biogas market in Poland, its current state, and the possibility of development during energy transformation, in particular in terms of using waste as a substrate for energy production. In February 2022, there were 130 agricultural biogas plants registered in Poland. On the other hand, in 2020, 4,409,054.898 Mg of raw materials were used to produce agricultural biogas in Poland. Among all the substrates used, waste played a special role. With the right amount of raw materials and proper management of a biogas plant, it is possible to produce electricity and provide stable and predictable heat supply. Bearing in mind the development of the Polish and European biogas markets, attention should be paid to ensure access to raw materials from which chemical energy in the form of biogas can be generated. Due to limited access to farmland and the increasing demand for food production, one should expect that waste will be increasingly often used for biogas production, especially that with high energy potential, such as waste related to animal production and the meat industry.
    Źródło:
    Journal of Water and Land Development; 2023, 56; 45--50
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    RELEASE OF BIOACTIVE SUBSTANCES FROM FORMULATIONS CONTAINING ARTHROSPIRA PLATENSIS (SPIRULINA PLATENSIS)
    Autorzy:
    Muszyńska, Bożena
    Lazur, Jan
    Jękot, Barbara
    Krakowska, Agata
    Szewczyk, Agnieszka
    Sułkowska-Ziaja, Katarzyna
    Zimmer, Łukasz
    Poleszak, Ewa
    Opoka, Włodzimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/895358.pdf
    Data publikacji:
    2018-10-31
    Wydawca:
    Polskie Towarzystwo Farmaceutyczne
    Tematy:
    zinc
    phenolic compounds
    artificial digestive juices
    Arthrospira platensis
    indole compounds
    Opis:
    Arthrospira platensis (Spirulina platensis) is a well-known microalga and has been utilized as a medicinal agent and foodstuff by humans since at least 16th century. The aim of this study was to determine zinc content as well as determine phenolic and indole compounds from commercial preparations containing Arthrospira platensis (lyophilizate, tablets, and capsules) before and after extraction with methanol and incubation with artificial digestive juices. The secondary aim of this study was to evaluate the quality of these preparations. The samples were incubated in artificial stomach juice and in intestinal juice. The samples were mineralized and their zinc(II) ions content was estimated using flame absorption atomic spectroscopy (F-AAS). The maximum zinc(II) ions content released into the digestive juices was found to be up to 1.6 mg 100 g-1 of the preparation. Phenolic compounds identified in the examined extracts are as follows: gallic acid; protocatechuic acid; 3,4-dihydroxyphenylacetic acid; p-hydroxybenzoic acid; syringe acid; cinnamic acid; and quercetin. Furthermore, indole compounds identified were 5-hydroxy-L-tryptophan, 5-methyl-L-tryptophan, L-tryptophan, tryptamine, and 5-methyltryptamine. Consequently, it was also found that the distributed Arthrospira platensis in the form of tablets does not disintegrate in the artificial digestive juices. Among the examined preparations, only hard capsules met the requirements of the European Pharmacopeia 8th ed.
    Źródło:
    Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 5; 1187-1199
    0001-6837
    2353-5288
    Pojawia się w:
    Acta Poloniae Pharmaceutica - Drug Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of mAb6-9-1 monoclonal antibody against hemagglutinin of avian influenza virus H5N1 and its engineered derivative, single-chain variable fragment antibody
    Autorzy:
    Sawicka, Róża
    Siedlecki, Paweł
    Kalenik, Barbara
    Radomski, Jan
    Sączyńska, Violetta
    Porębska, Anna
    Szewczyk, Bogusław
    Sirko, Agnieszka
    Góra-Sochacka, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1038689.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    influenza virus
    monoclonal antibody
    scFv
    hemagglutinin
    antigenic epitope
    Opis:
    Hemagglutinin (HA), as a major surface antigen of influenza virus, is widely used as a target for production of neutralizing antibodies. Monoclonal antibody, mAb6-9-1, directed against HA of highly pathogenic avian influenza virus A/swan/Poland/305-135V08/2006(H5N1) was purified from mouse hybridoma cells culture and characterized. The antigenic specificity of mAb6-9-1 was verified by testing its cross-reactivity with several variants of HA. The mimotopes recognized by mAb6-9-1 were selected from two types of phage display peptide libraries. The comparative structural model of the HA variant used for antibody generation was developed to further facilitate epitope mapping. Based on the sequences of the affinity- selected polypeptides and the structural model of HA the epitope was located to the region near the receptor binding site (RBS). Such localization of the epitope recognized by mAb6-9-1 is in concordance with its moderate hemagglutination inhibiting activity and its antigenic specificity. Additionally, total RNA isolated from the hybridoma cell line secreting mAb6-9-1 was used for obtaining two variants of cDNA encoding recombinant single-chain variable fragment (scFv) antibody. To ensure high production level and solubility in bacterial expression system, the scFv fragments were produced as chimeric proteins in fusion with thioredoxin or displayed on a phage surface after cloning into the phagemid vector. Specificity and affinity of the recombinant soluble and phage-bound scFv were assayed by suitable variants of ELISA test. The observed differences in specificity were discussed.
    Źródło:
    Acta Biochimica Polonica; 2017, 64, 1; 85-92
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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